The summoner name or tag is incorrect
mastermate #na1
EMERALD III
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Match History for Patch: 16.9.1
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Champion Stats for Patch: 16.9.1
Champion Mastery
lvl: 61
642,362
lvl: 14
129,288
lvl: 13
134,271
lvl: 13
118,330
lvl: 13
112,045
lvl: 13
111,588
lvl: 12
100,862
lvl: 11
97,543
lvl: 11
92,560
lvl: 11
86,961
lvl: 10
78,979
lvl: 9
70,973